Question

simplify the expression (sqrt5-sqrt6)(sqrt5+sqrt6)

Answer 1

\[(\sqrt{5}-\sqrt{6})(\sqrt{5}+\sqrt{6})\]
\[5+\sqrt{30}-\sqrt{30}-6\]
when you do a binomial expansion
collect like terms and you have your answer

Answer 2

Will do you need more explanation?

Answer 3

(sqrt5-sqrt6)(sqrt5+sqrt6)
It's in the form (a -b) ( a + b) = a^2 +b^2
-> 5 - 6 = -1